I tend to reserve the term “distortion” to nonlinear effects. Everything you have described here is perfectly linear as long as you don’t approach clipping.
Yes. the impulse response may look gnarly in the time domain, but that’s mostly an inherent time/frequency effect. .
I'd imagine so, but I think that just increases the impedance of the positive feedback loop - so it presumably gets you back to a more rounded "knee" of the curve, something that Sallen-Key is trying to get rid of in the first place.
I tend to reserve the term “distortion” to nonlinear effects. Everything you have described here is perfectly linear as long as you don’t approach clipping.
Yes. the impulse response may look gnarly in the time domain, but that’s mostly an inherent time/frequency effect. .
I'm just using it in the sense of "unintended change in shape". I honestly haven't seen the term reserved specifically for nonlinear effects.
Great article. In this Sallen-Key filter, would it be possible to reduce the distorsion by putting a resistor just after the capacitor C1?
I'd imagine so, but I think that just increases the impedance of the positive feedback loop - so it presumably gets you back to a more rounded "knee" of the curve, something that Sallen-Key is trying to get rid of in the first place.
Very possible, true. Thank you.